Deception or trickery that is obvious or clumsy, the opposite of skillful sleight of hand.
From 'anti-' (opposite) + 'prestidigitation' (skillful hand tricks), a playful combination contrasting smooth magic with bungled attempts at deception.
Calling something 'antiprestidigitation' is a witty way to say someone's trying to trick you but doing it so badly that everyone can see what's happening—like watching someone try to hide a surprise when they're terrible at keeping secrets.
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